Pure Culture and DNA Sequence-Based Identification of Fusarium from Symptomatic Plants and Diverse Substrates

Kerry O’Donnell, Imana Laraba, David M. Geiser

Research output: Chapter in Book/Report/Conference proceedingChapter


Fusarium ranks as the most important group of plant pathogens, responsible for a wide range of economically destructive diseases, including vascular wilts and root, crown, and stem rots. In addition, head blight and ear rot diseases are associated with the accumulation of mycotoxins in cereals. With over 300 phylogenetically distinct species, and a dearth of phenotypical characteristics, DNA sequence data in most instances is the only reliable means for obtaining an accurate species identification. Here we describe how to obtain single-spored pure cultures from symptomatic host tissue and a molecular identification by querying publicly accessible DNA sequence databases using a portion of translation elongation factor 1-α (TEF1), the largest subunit of RNA polymerase (RPB1), and/or the second largest subunit of RNA polymerase (RPB2).

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Number of pages20
StatePublished - 2022

Publication series

NameMethods in Molecular Biology
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics

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